Hinge fitting



May 13, 1941 F. M. sALlsBuRY l 2,242,147

' HINGE FITTING l Filed Dec. 50, 1938 v3, Sheets-Sheet 1 May 1,3, 1941.F. M. sALlsBuRY.

HINGE FITTING Filed bec. 50,. 1938 3 Sheets-Sheet 2 May 1'3, A1941. F.M. sALlsBuRY HINGE FITTING Filed Dec. so, 1938 '3 Sheets-Sheet 5Moz/naaf .Patented May 13, 1.941l

UNITED STATES PiiTllliJ'l." CFFICE HINGE FITTING Frank M. Salisbury,Kenmore, lN.YY., assigner to Bell Aircraft Corporation, Buialo, N. Y., acorporation of New York Application December 30, 1938, ySerial No.248,615 Claims. 001. 24k-117) My invention relates generally to a wingcon? struction for an airplane, and more especially to a tapered Wingbeam which is provided with inte- Y gral hinge fittings.

One of the objects of my invention is to prof vide a Wing beam forwing'construction, especially of the, cantilever type, which is composedof a pair of reenforcing pieces provided with integrally formed hingelfittings and fabricated with flanges between which are inserted thesheer members of the beam Another object of my invention is to' providea reenforcing member for wing beam which is similar to the constructiondescribed above but which is provided with integral 'bosses andslots'for the. attachment of sheer members of web or truss design.

With these and other objects in View, my invention generally embracesthe idea of providing a beam for a cantilever wing which is providedwith reenforcing members having constant istress characteristics. Thesetapered reenforcing pieces are fabricated with flanges between vwhicharel Figure 5 is -a view takenalong the lineB-Sfof Figure 4, lookin;- inthe direction of the arrows.

Figure 6 kis a view taken along the line 6-9 of Figure 1, loeking in thedirection of the arrows.

. Figure 7 is a perspective view of a carry-` through member partiallybroken away. l Figure 8 is a fragmental perspective View ofcarry-through provided with attaching flanges.

Figure 9 is a fragmental perspective view of the lower reenforcingmember of the beam shownin Figure 1, disclosing the structure of anintegrally formed flange in detail.

Figure 10 is a fragmental perspective view of one of the reenforcing`members of the beam shown in Figure 3, disclosing the flanged con- Ystruction which supports the beam webs.

As shown in Figure 3, my invention consists of a wing beam, generallydesignated by the numeral I, which is designed to form partv of acantilever wing structure. This reenforcing beam l comprises an upperreenforcing strip 2 and a lower reenforcing strip 3 which are tapered ona constant stress basis.

As best shown in'Figure 10, the tapered reenforcing piece -3 isfabricated with flanges 4 and 5 between which are inserted sheer memberssuch as the beam webs 6. The upper reenforcing strip' 2 is similarlyconstructed and the web 5 forms the connection between the two members.

One'extremity of the lower reenforcing strip 3 is forged or 'machinedinto a hinge tting 1 which members, thereby increasing the strength ofthe 'wing structure.

is provided with bushed apertures 8. The upper reenforcing piece 2 issimilarly constructed.

A modification of this beam is also provided which is constructed in amanner similar to that described above except that the reenforcingpieces are provided with integral lugs or bosses for the attachment ofadditional sheer members of truss design. This construction provides anopening in the reenforcing beam through which access to the winginterior is allowed through the beam itself.

In the drawings:

Figure 1 is a partial view in side elevation of a wing beam which isprovided with sheer members' of both web and truss design,.showing thebeam attached to carry-through members of the fuselage construction. y

Figure 2 is a top plan View of the beam shown in Figure 1.

Figure 3 is a partial view in side elevation of a beam for the wing ofan airplane which is provided entirely with a web sheer piece.

Figure 4 is a view taken along the line 4--4 of Figure 2, looking in thedirection of the arrows.

In Figure 1 is disclosed a wing beam 9 which is a modication of myinvention. This beam 9 is provided with the structural parts discussedin relation-to the beam I shown in Figure 3. and these parts aredesignated by identical numerals.

In addition to this enumerated construction, however, the lowerreenforcing piece 3 of the beam 9 is provided with an integrallyy formedflange I0, which is thickened intobosses II at any point where it isdesired to use ltruss construction in place of webs. This structure isshown in detail in Figure 9.

These bosses are provided with -suitable apertures II' to furnish meansof securing trusses such as designated at I2. Theilange III is alsoprovided with slots I3 in which are mounted web members of any suitableconstruction such as the gussets I4.

, The upper reenforcing piece 2 of the beam 9 is also anged and providedwith slots lI3 which are designed to carry web members such as811sac-iaiir and the .extremities ofthe said web members ,being mountedin the slots of the said ilanges. v

2.Inawingconstruction,awingbeamcom posedof two reenforcing members, ahinge ntting integrally formed on one of the extremities of each of thereenforcing, members. bosses .in- ,tegrally .formed with each of thereenforcing members adiacent the said hinge fittings. slotted tremitiesof which is bifurcated to form similar hinges il and 2li. Eachbifurcated portion of these hinges are provided with bushed apertures 2|To attach the reenforcing beam I or l t0 the fuselage of the airplane,the hinge members l of the upper and lower reenforcing pieces 2 and 3are fitted between the bifurcated hinges 2l of the carry-throughs I1 andil. A second reenforcing beam is attached to the opposite side of thefuselage by tting the hinge members 2 and 3 to the hinge .I8 of thecarry-throughs Hand il. The hinge members I are connected to thebifurcated hinges 20 by any suitable means such as the bolts 22.

From the above description it is apparent that .I have provided areenforcing beam for a wing construction of cantilever type which isprovided with means formed integrally with the beam to attach the' beamto'the fuselage construction. By means of this design, no bolts oradditional attaching means are required to transfer the loads in thechord members of the beam to the hinge fittings. This increases thestrength of the beam in its point of attachment, thereby strengtheningthe entire wing structure. The possibility of bolts or otherlattachin'gmeans being sheared oif is also eliminated.

While for purposes of illustration I have described two modifications ofmy invention, it is obvious that various changes could be made in themanner of fabrication of the parts of the beam without departing fromthe concept of my invention.

1 therefore, desire that my invention be only limited by the prior artand the scope ofthe appended claims.

I claim:

l. In a wing construction, a Wing beam comflanges integrally formed witheach of the reenforcing members and extending from the bosses to theextremities of the members opposite the hinge fittings, struts andgussets adapted to connect the two reenforcing members, said strutmembers being mounted on the said bosses and the-extremities of the saidgussets being mounted in the slots oi the said flanges.

3.Inawingconstruction,awingbeamcom posed of upper and lower reenforcingmembers, a hinge fitting integrally formed on one of the extremities ofeach of the reenforcing members, said lower reenforcing member taperingfrom the hinge outwardly towards the upper reenforcing member on aconstant stress basis, slotted anges integrally formed with each oi thereenforcing' members, and web members adapted to connect the tworeenforcing members, said web members being mounted in the SIOS 0f thesaid 11311868.

4. In a wing construction, a wing beam composed of upper and lowerreenforcing members, a hinge iitting integrally formed on one of theextremities of each of the reenforcing members, said lower reenforcingmember tapering from the hinge outwardly towards the upper reenforcingmember on a constant stress basis, slotted flanges integrally formedwith each of the reenforcing members and extending from the hinge to theextremities of the'members opposite the hinge iittings, and gussetsadapted to connect the two reenforcing members. said gussets beingmounted posed of two reenforcing members, a hinge fitting integrallyformed on one of the extremities of each of the reenforcingmembersfbosses on each of the reenforcing members adjacent the saidhinge fittings, slotted flanges on each of the reenforcing members andextending from the bosses to the extremities of the members opposite thehinge fittings, trusses and web members adapted to connect the tworeenforcing members, said truss members being mounted on the said bossesin the slots of the said flanges.

5. In a wing construction, a wing beam composed of an upper and a lowerreenforcing member, a hinge tting integrally formed on the extremitiesof each of the reenforcing members, said lower reenforcing membertapering from the hinge outwardly towards the upper reenforcing memberon a constant stress basis, a flange integrally formed with each of thereenforcing members adjacentthe said hinge fittings, portions of eachflange being thickened to form bosses. slotted flanges integrally formedwith each of the reenforcing members and extending from the said bossesto the extremities of the said .members opposite the hinge fittings,struts and web members adapted to connect the two reenforcing members,said strut members being mounted on the said bosses and the extremitiesof the said web members being mounted in the slots of the said anges.

FRANK M. SALISBURY.

